TLF1963 Datasheet, PDF (3/24 Pages) Infineon Technologies AG – Low Dropout Linear Voltage Post Regulator

Low Dropout Linear Voltage Post Regulator
TLF1963
1
Overview
Features
• Adjustable Output Voltage
• Output Voltage Tolerance at small loads of ±1.5 %
• Output Current Capability up to 1.5 A
• Very Low Dropout Voltage of 340 mV
• Extended Operating Range Starting at 1.7 V
• Low Noise of typ. 40 µV_RMS (10 Hz to 100 kHz)
• Small Output Capacitor for Stability 10 µF
• Suitable for Ceramic Output Capacitors
• Enable Functionality
• Overtemperature Shutdown
• Reverse Polarity Protection
• Output Current Limitation
• Wide Temperature Range From -40 °C up to 150 °C
• Suitable for use in automotive electronics as Post Regulator
• Green Product (RoHS compliant)
• AEC Qualified
PG-TO263-5
Functional Description
TLF1963 is a low dropout voltage regulator available in PG-TO263-5 and
PG-TO252-5 SMD package. The IC regulates an input voltage V_I in the
PG-TO252-5
range of 2.5 V < V_I < 20 V to an adjustable output voltage of
1.21 V < V_Q,nom < V_I -V_dr. The device is capable to supply loads up to 1.5 A. The regulator can be enabled and
disabled via the Enable input. The integrated output current limitation and the overtemperature shutdown will
protect the device against failures like output short circuit to GND, overcurrent and overtemperature.
The TLF1963 provides the ideal solution for systems requiring several supply voltages. With its adjust feature the
regulator can provide all supply voltages between 1.21 V and the available input voltage, this offers a high flexibility
to the system designer.
Choosing External Components
The input capacitor C_I is necessary for compensating line influences. The output capacitor C_Q is necessary for the
stability of the regulating circuit. Stability is guaranteed at values specified in “Functional Range” on Page 8
within the whole operating temperature range.
Type
TLF1963TB
TLF1963TE
Data Sheet
Package
PG-TO263-5
PG-TO252-5
3
Marking
T1963V
T1963V
Rev. 1.0, 2012-11-08